Answer Posted / thowsif_emerson
It consists of an iron armature fastened to a balance beam.
Under normal operating Conditions, the current through
the relay coil is such that the beam is held in the
horizontal position by the spring. When a fault occurs,
the current through the relay coil becomes greater
than the pick up value and the beam is attracted
to close the trip circuit. This causes the opening of
the circuit breaker to isolate the faulty circuit..
Log on to:-
http://electricalandelectronics.org/2008/10/30/electromagnet
ic-attraction-relays/
| Is This Answer Correct ? | 11 Yes | 2 No |
Post New Answer View All Answers
what is the power factor used by the PHCN in nigeria? 2. what is the difference between an alternator and generator. 3. Generation of poweris in KV but how is transmission is in MW. 4.If the transmission of power is 20,000MW how can it be increaesed to 80,000MW
Why LED light has advantage of rapid reflection ,although other lights alse reflect.? and this light is considered to be best for transmission usage in case of Free optics
What are the various types of rotor used in the alternators?
Dry type transformers
What is miller crystal oscillator? Explain its operation?
What is the reason that the humming sound is coming from the induction furnace panel?
can we make a electric generator,which can not use any type of fuel,air,solar,gas,thermal,coal,petrol,etc and able to produce electrical energy (or self electricity generating generator)
can anyone explain 11kV 3core cable megger,hi pot test procedure with connection details?
what is the difference between rectifier and converter and commudator?
what is gas turbine intercooling ?
What will be electrical cost per sqft for IT building (basebuild and fitout)and for residential township?
what are the ''pitting rings''and how cn they be controlled in a series generator
Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.
difference between Ac and Dc mcb ????
Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?
